JP2007244112A

JP2007244112A - Junction box for automobile

Info

Publication number: JP2007244112A
Application number: JP2006064144A
Authority: JP
Inventors: Ichiro Terunuma; 一郎照沼; Osamu Kusadome; 理草留
Original assignee: Fujikura Ltd
Current assignee: Fujikura Ltd
Priority date: 2006-03-09
Filing date: 2006-03-09
Publication date: 2007-09-20

Abstract

<P>PROBLEM TO BE SOLVED: To provide a junction box for automobile which can generalize a part of a bus bar and can reduce the cost of quasi-construction. <P>SOLUTION: The junction box for automobile using a bus bar as a wiring medium has such constitution that mounted parts including fuses and relays are arranged regularly and that they are connected with one another via general burs of at least two or more kinds of unbent plate bus bars which are manufactured by die-cutting conductive metallic plates and bus bars which are manufactured by die-cutting conductive metallic plates and bending them at least once. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ヒューズ及びリレーを含む搭載部品を金属製のバスバーで接続した構成を有する自動車用電気接続箱に関する。 The present invention relates to an electric junction box for automobiles having a configuration in which mounted components including a fuse and a relay are connected by a metal bus bar.

従来、自動車用電気接続箱の配線媒体としては、銅系の材料を打ち抜き、曲げ加工などを施したバスバーが主流となっている（例えば、特許文献１〜４参照。）。 Conventionally, as a wiring medium for an electric junction box for automobiles, a bus bar obtained by punching a copper-based material and performing a bending process or the like has been mainly used (for example, see Patent Documents 1 to 4).

特許文献１には、細幅帯状の導電板材と、該導電板材に対して直交方向から組み付けて固定するタブ状の圧接端子部材とからなり、圧接端子部材に、バスバーを挿通する長さ方向の差込穴と、該差込穴の端部に連続してバスバーと圧接させるスリット状の圧接部とを設けた電気接続箱の内部に取り付けるタブ付きのバスバーが開示されている。
特許文献２には、電気接続箱の収容部内に挿入されるバスバーの取付構造が開示されている。このバスバーは、対向する各ガイド壁の間に挿入され、各端子が各透孔に挿入され、バスバーの各貫通孔に各係合片の突起が係合することによって、バスバーは収容部内に抜け止め保持された状態で装着される。
特許文献３には、自動車用電気接続箱内に配置して分岐回路を構成するためのマルチ端子であって、導電性金属板を打ち抜き加工して形成しており、電線圧接用の圧接刃を備えた電線圧接部と、プリント基板の導電路に突き刺す先端を有する突出部からなる基板接続部と、端子同士を嵌合接続するためのタブからなる端子接合接続部とを、共通基板部より突設したマルチ端子とそれを備えた電気接続箱が開示されている。
特許文献４には、自動車用電気接続箱内に配置して分岐回路を構成するためのマルチ端子であって、導電性金属板を打ち抜き加工して形成され、電線圧接用の圧接刃を備えた電線圧接部と、プリント基板の導電路に突き刺す先端を有する突出部からなる基板接続部と、端子同士を嵌合接続するためのタブからなる端子嵌合接続部とを、共通基板部より突設してなるマルチ端子とそれを備えた電気接続箱が開示されている。
特開平８−２５１７６２号公報特開平１０−３３６８５１号公報特開平１０−２２４９５０号公報特開２０００−２２４７３７号公報 Patent Document 1 is composed of a narrow strip-shaped conductive plate material and a tab-shaped pressure contact terminal member that is assembled and fixed to the conductive plate material from an orthogonal direction, and the lengthwise direction through which the bus bar is inserted into the pressure contact terminal member. A bus bar with a tab that is attached to the inside of an electrical junction box provided with an insertion hole and a slit-like pressure contact portion that presses the bus bar continuously at the end of the insertion hole is disclosed.
Patent Document 2 discloses a mounting structure for a bus bar that is inserted into a housing portion of an electrical junction box. The bus bar is inserted between the opposing guide walls, the terminals are inserted into the through holes, and the protrusions of the engaging pieces are engaged with the through holes of the bus bar, so that the bus bar is pulled out into the accommodating portion. It is mounted in a stopped and held state.
Patent Document 3 discloses a multi-terminal for forming a branch circuit arranged in an electric junction box for automobiles, which is formed by punching a conductive metal plate, and includes a pressure contact blade for wire pressure welding. The common wire portion protrudes from the common substrate portion, the wire pressure contact portion provided, the substrate connection portion comprising a protruding portion having a tip pierced into the conductive path of the printed circuit board, and the terminal joint connection portion comprising a tab for fitting and connecting the terminals to each other. A multi-terminal provided and an electrical junction box including the same are disclosed.
Patent Document 4 is a multi-terminal for disposing an electric junction box for an automobile to constitute a branch circuit, which is formed by punching a conductive metal plate, and includes a pressure contact blade for wire pressure contact. A wire connection part, a board connection part consisting of a protrusion having a tip that pierces the conductive path of the printed circuit board, and a terminal fitting connection part consisting of a tab for fitting and connecting the terminals to each other are projected from the common board part. A multi-terminal and an electric junction box having the same are disclosed.
JP-A-8-251762 JP-A-10-336851 JP-A-10-224950 JP 2000-224737 A

前述したように、従来の自動車用電気接続箱にあっては、銅板などの導電性金属板をプレスで打ち抜き、曲げなどによって作られた金属製のバスバーで電源配分を行っているため、バスバー自体の形状が複雑化し、ほぼ全数がその車種にしか対応できない専用部品となる。このため、車種の開発時に莫大な金型費がかかってしまう上、複雑化してしまった形状により、他の車種への展開が困難という問題があった。 As described above, in the conventional electric junction box for automobiles, the power distribution is performed by the metal bus bar made by punching and bending a conductive metal plate such as a copper plate, and the bus bar itself. The shape of the car becomes complicated, and almost all parts are dedicated parts that can only be used for that vehicle type. For this reason, there is a problem that enormous mold costs are required at the time of development of the vehicle type, and that it is difficult to deploy to other vehicle types due to the complicated shape.

本発明は、前記事情に鑑みてなされ、バスバーの一部を汎用化でき、車種開発時の準工費を削減し得る自動車用電気接続箱の提供を目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric junction box for automobiles that can generalize a part of a bus bar and reduce the sub-construction cost at the time of vehicle type development.

前記目的を達成するため、本発明は、配線媒体としてバスバーを用いた自動車用電気接続箱において、ヒューズ及びリレーを含む搭載部品を規則的に並べ、これらを導電性金属板を打ち抜いて作製された曲げ無しの平板バスバーと、導電性金属板を打ち抜いて少なくとも一回以上曲げ加工を施して作製されたバスバーとの少なくとも２種類以上の汎用バスバーを介して接続した構成を有することを特徴とする自動車用電気接続箱を提供する。 In order to achieve the above-mentioned object, the present invention was produced by regularly arranging mounting parts including fuses and relays in a car electrical junction box using a bus bar as a wiring medium, and punching out a conductive metal plate. An automobile having a configuration in which a flat bus bar without bending and a bus bar made by punching a conductive metal plate and bending it at least once are connected via at least two kinds of general-purpose bus bars. Provide an electrical junction box.

本発明の自動車用電気接続箱において、前記汎用バスバーが耐熱銅合金製であることが好ましい。 In the electric junction box for automobiles of the present invention, it is preferable that the general-purpose bus bar is made of a heat-resistant copper alloy.

本発明の自動車用電気接続箱において、前記平板バスバーが少なくとも２個以上使われていることが好ましい。 In the electric junction box for automobiles of the present invention, it is preferable that at least two flat bus bars are used.

本発明の自動車用電気接続箱は、内部の電源系統を組む際に、ヒューズやリレーなどを規則的に並べることで、複雑化していたバスバーの一部を汎用化することができ、車種開発時の準工費を削減することができる。 The electric junction box for automobiles of the present invention can be used for a part of complicated bus bars by arranging fuses and relays regularly when assembling an internal power system. Can reduce the sub-work cost.

本発明の対象物である自動車用電気接続箱は、従来、例えば図６に示すような電源体系図に基づき、設計が行われる。図６中、符号４０はヒューズ、４１はリレー、４２は専用バスバー適用部、４３は専用バスバーである。電源分配の効率化を図るために、図６中、実線で囲んだ専用バスバー適用部４２では、金属製のバスバーで複数のヒューズ４０やリレー４１などの各搭載部品への接続を図り、それ以外の部分には、圧着などにより端子を接続させた電線を直接電気接続箱に挿入して接続させる方式が一般的である。 Conventionally, an electrical junction box for automobiles, which is an object of the present invention, is designed based on a power supply system diagram as shown in FIG. 6, for example. In FIG. 6, reference numeral 40 is a fuse, 41 is a relay, 42 is a dedicated bus bar application unit, and 43 is a dedicated bus bar. In order to increase the efficiency of power distribution, the dedicated bus bar application unit 42 surrounded by a solid line in FIG. 6 is connected to each mounted component such as a plurality of fuses 40 and relays 41 with a metal bus bar. For this part, a method is generally used in which an electric wire connected with a terminal by crimping or the like is directly inserted into an electric connection box and connected.

しかし、このような方式を採用すると、前述したように、バスバーは一本一本が専用部品（専用バスバー４３）となってしまい、汎用性が非常に低くなってしまう問題点がある。 However, when such a method is adopted, as described above, each bus bar becomes a dedicated part (dedicated bus bar 43), and there is a problem that versatility becomes very low.

本発明は、前記問題点に着目し、電源体系を組む際、図１に示すように、自動車用電気接続箱１の搭載部品であるヒューズ２やリレー３を規則的に並べる。
このように各搭載部品を配置した上で、図３に示すような全く同形状の平板からなる汎用バスバー１０をいくつも採用することで、専用バスバー４２を減らし、バスバーの汎用性を高める。その結果、ある車種を開発する際に必要な準工費を減らすことができるようになる。また、汎用バスバー１０は、他車種でも使用することができるので、他車種に用いる自動車用電気接続箱の準工費も減らすことができるというメリットもある。 In the present invention, paying attention to the above-mentioned problem, when assembling a power supply system, as shown in FIG. 1, fuses 2 and relays 3 that are mounted parts of the electrical junction box 1 are arranged regularly.
In this way, after arranging each mounted component, the number of general-purpose bus bars 10 made of exactly the same shape as shown in FIG. 3 is adopted, thereby reducing the number of dedicated bus bars 42 and increasing the versatility of the bus bars. As a result, it is possible to reduce the sub-construction cost required for developing a certain vehicle type. Moreover, since the general-purpose bus bar 10 can be used in other vehicle types, there is also an advantage that the sub-work cost of the electric junction box for automobiles used in other vehicle types can be reduced.

以下、図面を参照して、本発明の自動車用電気接続箱の実施形態を説明する。
図２は、本発明の自動車用電気接続箱の一実施形態を示す斜視図である。本実施形態の自動車用電気接続箱１は、ヒューズやリレーなどの搭載部品を規則的に並べ、これらを導電性金属板を打ち抜いて作製された曲げ無しの平板バスバーと、導電性金属板を打ち抜いて少なくとも一回以上曲げ加工を施して作製されたバスバーとの少なくとも２種類以上の汎用バスバー１０，２０，３０を介して接続した構成を有している。 Hereinafter, an embodiment of an electric junction box for automobiles of the present invention will be described with reference to the drawings.
FIG. 2 is a perspective view showing an embodiment of the electrical junction box for automobiles of the present invention. The electrical junction box 1 for an automobile according to the present embodiment is a flat bus bar without bending, in which mounted parts such as fuses and relays are regularly arranged and punched out of a conductive metal plate, and the conductive metal plate is punched out. And at least two or more types of general-purpose bus bars 10, 20, and 30 connected to a bus bar that has been bent at least once.

図３は、本実施形態の自動車用電気接続箱１において用いる汎用バスバーの第１の例を示す斜視図である。この汎用バスバー１０は、導電性金属板を打ち抜いて２つの端子部１１，１２と電線圧接可能な接続部１３とが共通基板部１４から突設された形状をなしている。接続部１３は、導電性金属板を打ち抜いて折り曲げ加工することで形成される。 FIG. 3 is a perspective view showing a first example of a general-purpose bus bar used in the electric junction box 1 for an automobile according to the present embodiment. The general-purpose bus bar 10 has a shape in which a conductive metal plate is punched and two terminal portions 11 and 12 and a connection portion 13 that can be pressed against an electric wire are projected from a common substrate portion 14. The connecting portion 13 is formed by punching a conductive metal plate and bending it.

図４は、本実施形態の自動車用電気接続箱１において用いる汎用バスバーの第２の例を示す斜視図である。この汎用バスバー２０は、導電性金属板を打ち抜いて２つの端子部２１，２２と基板回路等に差し込み接続が可能な接続部２３とが共通基板部２４から突設された平板状をなしている。 FIG. 4 is a perspective view showing a second example of a general-purpose bus bar used in the electrical junction box 1 for an automobile according to the present embodiment. The general-purpose bus bar 20 has a flat plate shape in which a conductive metal plate is punched out and two terminal portions 21 and 22 and a connection portion 23 that can be inserted and connected to a substrate circuit or the like project from a common substrate portion 24. .

図５は、本実施形態の自動車用電気接続箱１において用いる汎用バスバーの第３の例を示す斜視図である。この汎用バスバー３０は、導電性金属板を打ち抜いて１つの端子部３１と基板回路等に差し込み接続が可能な接続部３２とが共通基板部３４から突設された平板状をなしている。 FIG. 5 is a perspective view showing a third example of a general-purpose bus bar used in the automobile electrical junction box 1 of the present embodiment. The general-purpose bus bar 30 has a flat plate shape in which a conductive metal plate is punched and a terminal portion 31 and a connection portion 32 that can be inserted and connected to a substrate circuit or the like are projected from a common substrate portion 34.

前述した各汎用バスバー１０，２０，３０を構成する導電性金属板としては、特に限定されないが、耐熱銅合金が好ましい。 Although it does not specifically limit as a conductive metal plate which comprises each general purpose bus-bar 10,20,30 mentioned above, A heat-resistant copper alloy is preferable.

本実施形態の自動車用電気接続箱１は、図１に示す電源体系図において、符号４で示す汎用バスバー使用部に用いるバスバーとして、前述した汎用バスバー１０，２０，３０のうち、好ましくは２種以上を適宜組み合わせて用い、複雑な専用部品である専用バスバーの使用頻度を少なくしている。また、使用する汎用バスバー１０，２０，３０として、平板バスバーが少なくとも２個以上使われていることが好ましい。 The electric junction box 1 for an automobile according to the present embodiment is preferably two types of the above-described general-purpose bus bars 10, 20, and 30 as bus bars used for the general-purpose bus bar use portion indicated by reference numeral 4 in the power supply system diagram shown in FIG. The above is used in an appropriate combination to reduce the frequency of use of dedicated bus bars, which are complex dedicated parts. Further, it is preferable that at least two flat bus bars are used as the general-purpose bus bars 10, 20, 30 to be used.

このように本実施形態の自動車用電気接続箱１は、内部の電源系統を組む際に、ヒューズ２やリレー３などを規則的に並べることで、複雑化していたバスバーの一部を汎用化することができ、車種開発時の準工費を削減することができる。 As described above, the electrical junction box 1 for an automobile according to the present embodiment generalizes a part of the complicated bus bar by arranging the fuses 2 and the relays 3 regularly when the internal power supply system is assembled. It is possible to reduce the sub construction cost at the time of vehicle model development.

なお、前述した実施形態ではリレーの後にヒューズが配列される形にしていたが、ヒューズが先でも構わない。また、ヒューズ、リレーの種類や配列により、汎用バスバー１０，２０，３０を数種類用意しても構わない。 In the embodiment described above, the fuses are arranged after the relay. However, the fuses may be arranged first. Also, several types of general-purpose bus bars 10, 20, and 30 may be prepared depending on the types and arrangement of fuses and relays.

本発明の自動車用電気接続箱の電源体系を例示する図である。It is a figure which illustrates the power supply system of the electrical junction box for motor vehicles of this invention. 本発明の自動車用電気接続箱の一実施形態を示す組立斜視図である。It is an assembly perspective view showing one embodiment of an electric junction box for automobiles of the present invention. 本発明の自動車用電気接続箱に用いる汎用バスバーの第１の例を示す斜視図である。It is a perspective view which shows the 1st example of the general purpose bus bar used for the electrical junction box for motor vehicles of this invention. 本発明の自動車用電気接続箱に用いる汎用バスバーの第２の例を示す斜視図である。It is a perspective view which shows the 2nd example of the general purpose bus bar used for the electrical junction box for motor vehicles of this invention. 本発明の自動車用電気接続箱に用いる汎用バスバーの第３の例を示す斜視図である。It is a perspective view which shows the 3rd example of the general purpose bus bar used for the electrical junction box for motor vehicles of this invention. 従来の自動車用電気接続箱の電源体系を例示する図である。It is a figure which illustrates the power supply system of the conventional electrical junction box for motor vehicles.

符号の説明Explanation of symbols

１…自動車用電気接続箱、２…ヒューズ、３…リレー、４…汎用バスバー使用部、１０，２０，３０…汎用バスバー、１１，１２，２１，２２，３１…端子部、１３，２３，３２…接続部、１４，２４，３４…共通基板部。
DESCRIPTION OF SYMBOLS 1 ... Electric junction box for motor vehicles, 2 ... Fuse, 3 ... Relay, 4 ... General-purpose bus-bar use part, 10, 20, 30 ... General-purpose bus bar, 11, 12, 21, 22, 31 ... Terminal part, 13, 23, 32 ... Connection part, 14, 24, 34 ... Common substrate part.

Claims

配線媒体としてバスバーを用いた自動車用電気接続箱において、
ヒューズ及びリレーを含む搭載部品を規則的に並べ、これらを導電性金属板を打ち抜いて作製された曲げ無しの平板バスバーと、導電性金属板を打ち抜いて少なくとも一回以上曲げ加工を施して作製されたバスバーとの少なくとも２種類以上の汎用バスバーを介して接続した構成を有することを特徴とする自動車用電気接続箱。 In an electrical junction box for automobiles using a bus bar as a wiring medium,
The mounted parts including fuses and relays are regularly arranged, and these are produced by bending a flat metal bus bar made by punching a conductive metal plate and bending the conductive metal plate at least once. An electrical junction box for automobiles, characterized in that it has a configuration in which it is connected to at least two types of general-purpose bus bars.

前記汎用バスバーが耐熱銅合金製であることを特徴とする請求項１に記載の自動車用電気接続箱。 2. The electric junction box for automobiles according to claim 1, wherein the general-purpose bus bar is made of a heat-resistant copper alloy.

前記平板バスバーが少なくとも２個以上使われていることを特徴とする請求項１又は２に記載の自動車用電気接続箱。

The electric junction box for automobiles according to claim 1 or 2, wherein at least two flat bus bars are used.